66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This program demonstrates basic SPIR-V module processing using
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// SPIRV-Tools C++ API:
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// * Assembling
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// * Validating
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// * Optimizing
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// * Disassembling
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#include <iostream>
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#include <string>
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#include <vector>
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#include "spirv-tools/libspirv.hpp"
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#include "spirv-tools/optimizer.hpp"
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int main() {
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const std::string source =
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" OpCapability Linkage "
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" OpCapability Shader "
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" OpMemoryModel Logical GLSL450 "
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" OpSource GLSL 450 "
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" OpDecorate %spec SpecId 1 "
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" %int = OpTypeInt 32 1 "
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" %spec = OpSpecConstant %int 0 "
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"%const = OpConstant %int 42";
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spvtools::SpirvTools core(SPV_ENV_UNIVERSAL_1_3);
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spvtools::Optimizer opt(SPV_ENV_UNIVERSAL_1_3);
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auto print_msg_to_stderr = [](spv_message_level_t, const char*,
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const spv_position_t&, const char* m) {
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std::cerr << "error: " << m << std::endl;
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};
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core.SetMessageConsumer(print_msg_to_stderr);
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opt.SetMessageConsumer(print_msg_to_stderr);
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std::vector<uint32_t> spirv;
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if (!core.Assemble(source, &spirv)) return 1;
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if (!core.Validate(spirv)) return 1;
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opt.RegisterPass(spvtools::CreateSetSpecConstantDefaultValuePass({{1, "42"}}))
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.RegisterPass(spvtools::CreateFreezeSpecConstantValuePass())
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.RegisterPass(spvtools::CreateUnifyConstantPass())
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.RegisterPass(spvtools::CreateStripDebugInfoPass());
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if (!opt.Run(spirv.data(), spirv.size(), &spirv)) return 1;
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std::string disassembly;
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if (!core.Disassemble(spirv, &disassembly)) return 1;
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std::cout << disassembly << "\n";
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return 0;
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}
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